Products Categories

HZ-A40 Vehicle-Mounted Cable Fault Integrated Testing System Power Cable Locator Test Van

Huazheng OEM HZ5375 5000A Digital Primary Current Injection Tester Supplier

Huazheng Manufacture HZ5376 6000A Primary Current Injection Test Equipment

Huazheng Manufacture HZ5374 OEM 4000A Primary Current Injection Test Kit

Huazheng HZ2511 Factory Manufacture Impulse Withstand Generator

Huazheng HZKF-2 Trace Moisture Analyzer Oil Water Content Tester

Huazheng HZ1200 Volumetric Karl Fischer Titration Apparatus

Huazheng HZ182N Transformer Oil Breakdown Voltage Tester

Huazheng HZC-4080 High-voltage Switch Characteristic Circuit Breaker Tester

Huazheng HZLY-50A Double Stage High Vacuum Transformer Oil Filter

0102030405

Huazheng OEM 60kv vlf cable testing equipment vlf ac hipot tester Supplier

Our vlf hipot tester products are engineered to deliver precise and stable performance, making them ideal for use in critical applications where accuracy and consistency are paramount. Whether you are in the field of scientific research, industrial testing, or environmental monitoring, our products are designed to meet your most demanding requirements.

1. Output rated voltage： See table 3

2. Output frequency：0.1Hz、0.05Hz、0.02Hz、0.01Hz

3.. Carrying capacity：

0.05Hz max 1.1µF

0.02Hz max 2.2µF

0.01Hz max 5.5µF

4. Measurement accuracy：3%

5. Voltage positive, negative peak error：≤3%

6. Voltage waveform distortion degree：≤5%

7. Conditions of use: indoor, outdoor; temperature：-10℃～+40℃；humidity：≤85%RH

8. Power supply fuse: See table 3

9. Power Supply: Voltage 220V±5%，60Hz

Note: If the portable generator is used for power supply, the generator

output voltage and frequency are required to be stable (generally, the power

is greater than 3kW, the frequency is 60Hz, and the voltage is 220V±5%

I.Overview

High voltage withstand test of electrical equipment is one of the most important items specified in insulation preventive test.

The withstand voltage test can be divided into ac withstand voltage test and dc withstand voltage test. The ac withstand voltage test can be divided into power frequency, frequency conversion and 0.1hz ultra-low frequency test technology, of which 0.1hz ultra-low frequency technology is the latest technology recommended by the current international electrotechnical commission. Our company's new generation of ultra-low frequency and high voltage generator is the core product independently developed with the latest American technology. It adopts 7-inch touch screen, the latest arm7 single chip microcomputer, high-speed ad acquisition circuit, and is equipped with background management software. It overcomes many shortcomings of domestic similar products (see table 1), and its cost performance is much higher than that of similar imported products. It is especially suitable for withstand voltage test of electrical equipment with large insulation equivalent capacitance (such as power cable, power capacitor, large and medium-sized generator and motor, etc.), which conforms to the national standard of electric power industry, general technical conditions for ultra-low frequency and high voltage generator (d) newly issued in 2004 l / t849.4-2004.

0.1Hz voltage-withstand equipment type	HV control method	High voltage waveform	Energy saving	Noise	Lifespan	Electrical life
mechanical	HV mechanical switch switching polarity	Square wave	Not energy-saving: consume excess energy with high-power resistors	High	short	Short
Electronic	HV electronic switch switching polarity	Sine wave	Energy saving: feed back excess power to the grid	A little	No lifespan, can use long-term	Long

Table 1 performance comparison between mechanical type and electronic type of 0.1Hz voltage withstand test equipment

II.Product Features

♢Advanced technology: digital frequency conversion technology, microcomputer control, pressure rise, pressure reduction, measurement, protection, etc
♢The test process is fully automated.
♢Easy to operate: simple wiring, fool operation.
♢Comprehensive protection: multiple protection (over-voltage protection, over- current protection at high and low voltage sides), rapid action (when acting)
♢Room ≤ 10ms), the instrument is safe and reliable.
♢Safety and reliability: the controller is connected with the low voltage of the high voltage generator, with photoelectric control, safe and reliable use.
♢The high and low voltage closed-loop negative feedback control circuit is adopted, and the output has no capacity rise effect.
♢Complete configuration: capacitive touch screen, LCD Chinese character display, automatic storage, automatic printing.
♢Large test range: 0.1Hz, 0.05Hz and 0.02hz multi frequency selection, large test range.
♢Small volume and light weight: it is very convenient for outdoor operation.
♢Upper computer background management software（selective assembly）

III.Technical Parameters Of Series Products